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<h1><a name="SECTION0022000000000000000000"></a><a name="tkinter"></a>
<br>
20. Graphical User Interfaces with Tk 
</h1>

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<p>
Tk/Tcl has long been an integral part of Python.  It provides a robust
and platform independent windowing toolkit, that is available to
Python programmers using the <tt class="module"><a href="module-Tkinter.html">Tkinter</a></tt> module, and its
extension, the <tt class="module"><a href="module-Tix.html">Tix</a></tt> module.

<p>
The <tt class="module"><a href="module-Tkinter.html">Tkinter</a></tt> module is a thin object-oriented layer on top of
Tcl/Tk. To use <tt class="module"><a href="module-Tkinter.html">Tkinter</a></tt>, you don't need to write Tcl code,
but you will need to consult the Tk documentation, and occasionally
the Tcl documentation.  <tt class="module"><a href="module-Tkinter.html">Tkinter</a></tt> is a set of wrappers that
implement the Tk widgets as Python classes.  In addition, the internal
module <tt class="module">_tkinter</tt> provides a threadsafe mechanism which allows
Python and Tcl to interact.

<p>
Tk is not the only GUI for Python; see
section&nbsp;<a href="other-gui-packages.html#other-gui-packages">20.6</a>, ``Other User Interface Modules and
Packages,'' for more information on other GUI toolkits for Python.

<p>
<table class='synopsistable' valign='baseline'>
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      <td><b><tt class='module'><a href='module-Tkinter.html'>Tkinter</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Interface to Tcl/Tk for graphical user interfaces</td></tr>
  <tr><td><b><tt class='module'><a href='module-Tix.html'>Tix</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Tk Extension Widgets for Tkinter</td></tr>
  <tr class='oddrow'>
      <td><b><tt class='module'><a href='module-ScrolledText.html'>ScrolledText</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>Text widget with a vertical scroll bar.</td></tr>
  <tr><td><b><tt class='module'><a href='module-turtle.html'>turtle</a></tt></b></td>
      <td>&nbsp;</td>
      <td class='synopsis'>An environment for turtle graphics.</td></tr>
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<span class="release-info">Release 2.5.1, documentation updated on 18th April, 2007.</span>
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